Abstract
Apolipoprotein E (apoE), one of the major plasma lipoproteins, plays a major role in the transport and metabolism of lipids by acting as a ligand. apoE gene contains three potential alleles: ϵ2, ϵ3 and ϵ4, forming six genotypes: E2E2, E2E3, E2E4, E3E3, E3E3 and E4E4. Association between apoE gene polymorphism and triglyceride (TG) is still controversial. There was no any meta-analysis to explore the association of apoE gene polymorphism with triglyceride level, and this meta-analysis was performed to evaluate the association between apoE gene polymorphism and triglyceride in patients with renal diseases. A predefined literature search and selection of eligible relevant studies were performed to collect data from electronic databases. Twenty-four articles were identified for the analysis of association between apoE gene polymorphism and triglyceride level. Subjects with E2E3 or E3E4 had a higher TG than those with E3E3. Subjects with ϵ4 had a higher TG than those with ϵ3. Subjects with ϵ2 had a slightly higher TG than those with ϵ3, although there was no statistical difference. Interestingly, subjects with ϵ4 had a much higher TG than those with ϵ2. In conclusion, E2E3, E3E4 or ϵ4 was associated with higher level of TG. However, more studies should be performed in the future.
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